74 results about "DigiDoc" patented technology

A method and system for managing the electronic signing of digital documents is disclosed. An electronic document created and prepared for signing by associating certain signing constraints with the document. Indicia of the signing constraints are encoded into a document information block or blocks that are embedded into the document. The information block may include indicia of a database record at a central server that stores indicia of the signing constraints in addition to or in lieu of including the signing constraint indicia in the document information block or blocks. Upon receiving the prepared document at a signing terminal, the information blocks are extracted and the signing constraints tested. If the user desires to sign the document, and if the user is permitted to sign, the document is electronically signed and transmitted to the central file server for storage.

The access method comprises the following steps: i) receiving a notification indicating the presence of at least one digital document available on the network, said notification comprising at least one executable command adapted to detect whether the recipient client device comprises a local application capable of processing the digital document, ii) executing the command or commands in order to detect the local application, and iii) in case of positive detection, accessing the digital document from a local server whereas in case of negative detection, accessing the document from the address of a remote server.

A fraud detection system for detecting fraudulent acts related to payment discounts from digital transactional data is disclosed. In some embodiments, the fraud detection system is programmed or configured with data structures and/or database records that are arranged to detect an occurrence of a triggering event, such as receiving an early payment discount by a buyer account from a supplier account. The fraud detection system is programmed to analyze how a first amount charged for certain items by the supplier account to the buyer account before the triggering event has changed to a second amount after the triggering event from digital documents related to procurement transactions. The certain items may include items for sale or for other miscellaneous items. The digital documents may include catalogs, purchase requisitions, purchase orders, or invoices. The fraud detection system is programmed to further detect any potential fraud committed by the supplier account based on the analysis result and assist the buyer account with handling any potential fraud.

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing blockchain-based guarantee information. One of the methods includesreceiving a cyphertext of a digital document specifying a guarantee and one or more zero-knowledge proofs (ZKPs) related to one or more values associated with the guarantee; verifying the one or moreZKPs; upon successfully verifying the one or more ZKPs, storing the cyphertext to a blockchain based on performing a consensus algorithm; receiving a drawdown request of the guarantee from a first computing device associated with the beneficiary or a representative of the beneficiary; storing the drawdown request to the blockchain based on performing a consensus algorithm; and delivering a first message about the drawdown request to a second computing device.

A method for producing a cryptographic timestamp for a digital document using multiple time servers is provided. In the method, a nonce value is produced and a current hash value is formed from the nonce value and the digital document. Then, a time server is repeatedly selected, the current hash value is transmitted to the selected time server, a response comprising a digital signature of the current hash value and a time indication is received by the selected time server, and an additional hash value is determined from the received response and used as the current hash value. The cryptographic timestamp for the digital document is formed from the nonce value and the multiple received responses. The method produces a tamperproof timestamp on a majority basis and is suitable for dating and protocolling in the field of automation and loT.

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing blockchain-based guarantee information. One of the methods includesreceiving, by a blockchain node of a first blockchain network, a cross-chain request for relaying a cyphertext of a digital document to a second blockchain network, wherein the cross-chain request issent from a first computing device associated with a guarantor, the digital document specifies a guarantee from the guarantor and one or more predetermined conditions of executing the guarantee; storing the cross-chain request and the cyphertext to a first blockchain associated with the first blockchain network based on performing a consensus algorithm; receiving a message from a second computingdevice for relaying information between the first blockchain network and the second blockchain network, the message includes a confirmation that the guarantee is accepted by the beneficiary and storedon a second blockchain associated with the second blockchain network; and updating a status of the guarantee to indicate that the guarantee has been voided on the first blockchain.